Purewell Variheat mk2 cast iron boiler
Purewell Variheat mk2 cast iron boiler cutaway

Available in 5 condensing models with outputs (@50/30°C) of 70, 95, 110, 140 and 180 kW.

Recently updated cast iron condensing, fully modulating, pre-mix gas fired commercial boiler.

Efficiency 96 product icon
Fuel NG product icon
Turndown 3 product icon
Warranty 10 heat exchanger product item
BIM objects icon
ErP Part L Compliant product icon

Product information

    • Proven reliability with a 10-year heat exchanger warranty
    • NEW built in boiler sequence controls capable of controlling up to 16 boiler modules and hot water circuits
    • Easy  access for servicing with NEW quick to remove front cover hooks 
    • NEW full spark ignitor enables servicing without the need to remove the whole burner
    • NEW Low NOx performance (<40mg/kWh, European Class 6)
    • Non complicated design means the Purewell Variheat mk2 is easy to operate & maintain, saving on time and money
    • Highly efficient offering up to 96% gross seasonal efficiency, reducing carbon emissions and saving the end user money on fuel bills
    • Fully factory tested before delivery
    • Sits on same footprint as many traditional and atmospheric cast iron boilers reducing space concerns
    • Easy access to plant room as the Purewell Variheat mk2 fits through a standard doorway
    • Can be disassembled for plant rooms with difficult access
    • Tolerant of existing heating systems making the Purewell Variheat mk2 the perfect choice when replacing old atmospheric boilers
    • Operates in sealed and open vented heating systems (you can read about the differences of Sealed 'v' Open Vented heating systems here)
    • Suitable for use with LPG Air for installation in the Channel Islands
    • Buy in confidence from a UK manufacturer with decades of commercial heating and hot water expertise
    • Extensive back up and support from our team of experience engineers across the UK
    • BIM objects available to assist in design and management
    • The only cast iron condensing commercial boiler that is compliant with the Energy related Products Directive (ErP) available in the UK.

Technical data

Compare models
Units PV70c
Energy
Building regulations - seasonal efficiency (%) gross 95.3
ErP efficiency rating (modules ≤ 70 kW only) A
Boiler output (non-condensing) mean 70°C - maximum kW 63.5
Boiler output (non-condensing) mean 70°C - minimum kW 21.2
Boiler output (condensing) mean 40°C - maximum kW 70
Boiler output (condensing) mean 40°C - minimum kW 23.3
Gross boiler input - maximum kW 72.2
Gross boiler input - minimum kW 24.1
Net boiler input - maximum kW 65
Net boiler input - minimum kW 21.7
Water
Water content litres 8
System design flow rate @ 20°C ∆T rise l/s 0.8
Water side pressure loss @ 20°C ∆T rise mbar 32
System design flow rate @ 11°C ∆T rise l/s 1.5
Water side pressure loss @ 11°C ∆T rise mbar 96
Maximum water pressure bar g 6
Gas
Gas flow rate natural gas (G20) - maximum m3/hr 6.9
Nominal inlet pressure natural gas (G20) - maximum mbar 20
Maximum gas inlet pressure natural gas (G20) mbar 25
Flue
Flue Gas Flow Rate@ 15°C, 9.5% CO2 m3/hr 86
Approx. flue gas temperature @ 50/30°C °C 40
Approx. flue gas temperature @ 80/60°C °C 60
Pressure at boiler flue spigot @full load Pa 100
Dry NOx emission (0% excess oxygen, dry air free) European Class 6 mg/kWh 21.3
Connection
Water flow/return connections inches R2”
Gas inlet connection pipe thread size inches R1”
Nominal flue diameter (I/D) mm 150
Electrics
Electrical supply 230 V 1 Ph 50 Hz
Power consumption @maximum W 94
IEC power outlet power consumption @ maximum W 460
Start current and run current Amp 0.54
Approx shipping weight kg 195
Noise emission @1 m and @maximum boiler modulation Max dB (A) 53
CO2 (±0.25%) - maximum % 9.5
CO2 (±0.25%) - minimum % 9.5

Downloads

Purewell Variheat mk2 boiler brochure

Product brochures 7140 kb

Purewell Variheat mk2 dimensions

Dimensions 156 kb

Purewell Variheat mk2 technical data table

Data tables 71 kb

Purewell Variheat mk2 Installers Guide

Installers guides 10411 kb

Purewell Variheat mk2 boiler hydraulic schemes

Hydraulic schematics 353 kb

Purewell Variheat mk2 pipe kit details and dimensions

Hydraulic schematics 482 kb

AGU 2.550 Expansion Kit Wiring Instructions

CAD 2245 kb

Purewell Variheat mk2 boiler 2D layout for 2 boilers CAD

CAD 3271 kb

Purewell Variheat mk2 boiler 2D layout for 3 boilers CAD

CAD 4829 kb

Purewell Variheat mk2 boiler 2D layout for 4 boilers CAD

CAD 6324 kb

Purewell Variheat mk2 boiler 2x PV110 pipe kit F CAD

CAD 252 kb

Purewell Variheat mk2 boiler 2x PV110 pipe kit P CAD

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Purewell Variheat mk2 boiler 2x PV110 pipe kit R CAD

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Purewell Variheat mk2 boiler 2x PV110 pipe kit S CAD

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Purewell Variheat mk2 boiler 2x PV140 CAD pipe kit P

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Purewell Variheat mk2 boiler 2x PV140 pipe kit F CAD

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Purewell Variheat mk2 boiler 2x PV140 pipe kit R CAD

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Purewell Variheat mk2 boiler 2x PV140 pipe kit S CAD

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Purewell Variheat mk2 boiler 2x PV180 pipe kit F CAD

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Purewell Variheat mk2 boiler 2x PV180 pipe kit P CAD

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Purewell Variheat mk2 boiler 2x PV180 pipe kit R CAD

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Purewell Variheat mk2 boiler 2x PV180 pipe kit S CAD

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Purewell Variheat mk2 boiler 2x PV70 pipe kit BLR CAD

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Purewell Variheat mk2 boiler 2x PV70 pipe kit F CAD

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Purewell Variheat mk2 boiler 2x PV70 pipe kit P CAD

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Purewell Variheat mk2 boiler 2x PV70 pipe kit R CAD

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Purewell Variheat mk2 boiler 2x PV95 pipe kit F CAD

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Purewell Variheat mk2 boiler 2x PV95 pipe kit P

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Purewell Variheat mk2 boiler 2x PV95 pipe kit R CAD

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Purewell Variheat mk2 boiler 2x PV95 pipe kit S CAD

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Purewell Variheat mk2 boiler 3x PV110 pipe kit F CAD

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Purewell Variheat mk2 boiler 3x PV110 pipe kit P CAD

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Purewell Variheat mk2 boiler 3x PV110 pipe kit R CAD

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Purewell Variheat mk2 boiler 3x PV110 pipe kit S CAD

CAD 219 kb

Purewell Variheat mk2 boiler 3x PV140 pipe kit F CAD

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Purewell Variheat mk2 boiler 3x PV140 pipe kit P CAD

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Purewell Variheat mk2 boiler 3x PV140 pipe kit R CAD

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Purewell Variheat mk2 boiler 3x PV140 pipe kit S CAD

CAD 218 kb

Purewell Variheat mk2 boiler 3x PV180 pipe kit F CAD

CAD 326 kb

Purewell Variheat mk2 boiler 3x PV180 pipe kit P CAD

CAD 509 kb

Purewell Variheat mk2 boiler 3x PV180 pipe kit R CAD

CAD 446 kb

Purewell Variheat mk2 boiler 3x PV180 pipe kit S CAD

CAD 216 kb

Purewell Variheat mk2 boiler 3x PV70 pipe kit F CAD

CAD 325 kb

Purewell Variheat mk2 boiler 3x PV70 pipe kit P CAD

CAD 505 kb

Purewell Variheat mk2 boiler 3x PV70 pipe kit R CAD

CAD 494 kb

Purewell Variheat mk2 boiler 3x PV70 pipe kit S CAD

CAD 221 kb

Purewell Variheat mk2 boiler 3x PV95 pipe kit F CAD

CAD 324 kb

Purewell Variheat mk2 boiler 3x PV95 pipe kit P CAD

CAD 506 kb

Purewell Variheat mk2 boiler 3x PV95 pipe kit R CAD

CAD 495 kb

Purewell Variheat mk2 boiler 3x PV95 pipe kit S CAD

CAD 224 kb

Purewell Variheat mk2 boiler PV110 CAD

CAD 1717 kb

Purewell Variheat mk2 boiler PV140 CAD

CAD 1699 kb

Purewell Variheat mk2 boiler PV180 CAD

CAD 1699 kb

Purewell Variheat mk2 boiler PV70 CAD

CAD 1717 kb

Purewell Variheat mk2 boiler PV95 CAD

CAD 1717 kb

Purewell Variheat mk2 Brochure for CHANNEL ISLANDS.pdf

CAD 5751 kb

LPB Expansion Kit Instructions

CAD,Installers guides 2358 kb

Purewell Variheat mk2 AGU 2.550 expansion kit wiring instructions

CAD,Installatievoorschriften 2245 kb

Ideal uses/applications

Optional extras

Reverse return header kit available for:

  • 2 boiler installation
  • 3 boiler installation
  • 4 boiler installation ( 2 x 2 boiler installation kit)

Flues available through our flue partner Midtherm Engineering

 

Often bought with

Commercial heating pressurisation unit

Chesil pressurisation unit

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Burstock expansion vessel for boilers

Burstock expansion vessel

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